Link for sprinkler-heads.



P. EVANS. LINK FDR SPRINKLER HEADS. APPLIGATION FILED MARIS, 191 4.

Patented Dec. 8, 1914.

' 4 J fi 5 POWELL EVANS, OF PHILADELPHIA, PENNSYLVANIA.

LINK FOR SPRINKLER-HEADS.

Specification of Letters Patent. Patented De 8, 1914.

Application filed March 13, 1914. Serial No. 824,461.

To all whom it may concern Be it known that I, POWELL EVANS, a citizenof the United States, residing in Philadelphia, Pennsylvania, haveinvented certain Improvements in. Links for Sprinkler-Heads, of whichthe following is a specification.

One object of my invention is to provide a sprinkler head with a novelform of fusible link whose design shall be such that the solderconnecting its members has the form of a pinor rod positioned to resistthe stresses set up by the tension exerted on the link under conditionsof use ;-it being further desired that link elements shall be of suchconstruction that they may be I made at a minimum of expense and at thesame time efficiently and reliably perform their functions.

I further desire to provide a sprinkler head which shall include a novelform of water distributing top portion and which, in addition to be nginexpensive to manufacture and assemble, shall satisfactorily spread thewater issuing from its base pipe under operating conditions.

These ob ects and other advantageous ends I secure as hereinafter setforth, reference being bad to thehccompanying drawings, in which Figure1 is a side elevation, partly in section, illustrating a sprinkler headconstructed according to my invention; Fig. 2

is a front elevation of the head shown in Fig. 1; Fig. 3 is a fusiblelink in which but two sections are employed; and Fig. 4 is a perspectiveview of one of the elements forming part of the links shown in Fig. 1 or3.

In the above drawings, 1 represents the externally threaded tubular baseof a sprinkler head, and the upper end of this base is shaped to form avalve seat 2 for the reception of a valve 3, having awasher 3 interposedbetween it and said seat. Integ'ral with the base 1 is a yoke 4 havingthe form of a ring which diametrically opposite the center of said baseis provided with a threaded opening into which is screwed a bolt 5. Thislatter is rigidly fixed to a spreader 6 having the form of a disk ofsheet material notched at the edges to form a series of teetlf'l, and isprovided with a series of perforations 8 shown in dotted lines in Fig.2. It is to be noted that the teeth of this spreader in addition tobeing turned down toward the yoke or main portion of the sprinkler so asto form a con cave structure, are individually cupped or made concavewith a double'curved surface directed toward the outlet, as indicated inthe drawings.

Connecting the valve 3 and the bolt 5 are a pair of levers 9 and 10, ofwhich the first has one arm entering a depression in the center of thetop of the valve 3 and also has a second arm designed to fit into arecess of one arm of the lever 10. A second arm of thislatter fits intoa concavity in the lower end of the bolt 5. Each of the levers 9 and 10has a relatively long laterally projecting third arm and both of sa1darms lie within a vertical plane having their outer ends formed toreceive the elements of a fusible link.

In that form of my invention'shown in Figs. 1 to 3 inclusive, this linkis composed of three elements in the form of three substantiallyparallel plates of similar construction, although the central plate 11is preferably thlcker than either of the outer plates 12 and 13. Onecharacteristic feature of *this fusible link consists in the provisionof any of a number of Ways, as, for example,

by pressing them up from flat material or by forming the elements ofsections of rolled strip material, in which one set 14 of theseprojecting angular parts is formed as a projecting rib. Thereafter theremaining parts are formed by cutting the strip material into lengths ofsuitable size, slitting them either before or after the cuttingoperation and finally pressing out the second set 15 of angular parts.In any case, the projecting angular portions 14 of one element of thefusible link fit between the oppositely projecting angular portions 15of another element, so that they lie parallel with and immediatelvadjacent the angular portions 14 of the latter, from which. however.they are spaced a predetermined distance by means of circular projectinglugs or pressed out portions 16.

With the construction described. the parts 14 of the three elements 11,12 and 13, -Fi 1. orof the elements 11 and 12. Fig. 2. are a 1 paralleland immediately adjacent each other,

as are also all of the angularportions lb of said elements, and it is tobe noted that said portions are so proportioned thatwhen the elementsare assembled'as shown in Fig. 1,

' there is a continuous passage-way w. extending laterally through thelink from-one side ,tothe other .ina hne at right angles to-itslongitudinal center line.

Under conditions of use,

terial extending into said projecting portion to look it to the secondelement. 3. fusible link consisting of a plurality of plates each havingat least one projecting portionextending into another plate; with theelements are I connected by a body of solder having a relatively low"but predetermined fusing point 1 and this fills the spaceslca usedbetween the side or e elements 11, 12 and 13 by the projections 16.

Thesolder also takes the form of a continu ous straight barorrodextending fromone ge of the link to the other through theintermeshing rejecting portions 14 and 15', and effectual y keystogether the elements of the link Obviously, the bar or rod of solder isintegral with the films or plates of solder lying between the linkelements and aids resisting the tension stresstowhich the "link issubjected. Both of the elements'12 and 13are rovided with openings 17adjacent one en for the reception of 'the long' arm of one ofthe leversas 10 while 9. body of relatively fusible material extendstripand the'body of the adjacent element to lock together said elements. Y

5. A' -fusible link consisting of a plurality of elements; each having aplurality 'of bent outfstrip' portions; with a bar of fusible "materialextending through the channels formed by saidbent out strip portions tolock the elements together.

" '61 A "fusible link consisting of a plurality of plates'each havingtwo series of bent out stripfportions respectively projecting in opthethird element '11 likewise hasan opening 18 for the reception of thelong arm of the j invention shown 111" Fig. 7 "most cases-thatjoi l ispreferable.

' 1. A fusible [of intermeshing elements; and a bar of rela- IV to.lock'them' together.

" other; with a body ofre atively second lever 9. I.

If desired, I -may employ that form of the 3, although for I c1aim: alink consisting of a' plurality tive1y 'f11sible materia1j extendinthrough the intermeshing portions of sai elements pa' A fusible hnk"consisting of a; plurality of elements, of which at least one isprovided with a portion rojectingl sible ma.-

into the p'ositedirections and intermeshing with thoseof the" otherelements; with a body of relatively fusible material e'xtending'through's'a'id intermeshing strip portions to lock the elements together. I

link consistingof a plurality 7.1K :fusible -of intermeshing elements;and a body of relatively 4 fusible material connecting the *irdjacentfaces'of said elements and extending'through their inter-meshingportions to I lock them together;

, In testimony whereof I have signed my name to this specificatiom'inthe presence of two subscribing witnesses.

POWELL EVANS.

- .witnesses'z- 1 a v l f. WILLIAM E." RADLEY; f 'Jos. H 'KLEI Y

